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cite="mid:CAEc4Ma0SQUWp2HRs30xantM4A1WyHprUW6U0hkbjPDOsXv+U_w@mail.gmail.com"
type="cite">
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<div>Thanks, Vasiliy and MarLinn! I didn't realize the
underlying behemoth was proprietary. That's a deal-killer for
me.</div>
</div>
</blockquote>
<br>
Don't just take my word for it. I didn't look at licensing terms or
anything. The thing is, it seems to be a startup company, but
nowhere did I find what they actually sell. No company can survive
without income and there's no mention of support contracts, so I
just assumed it must be the software itself, somehow. I just called
it "proprietary" because for me there would be no difference: a
company that doesn't tell me where the catch is is trying to catch
me off guard, so they're working on the level of thugs. Ergo,
without me, no matter how interesting the product looks. But I'm a
harsh customer and it might be an unintentional blunder seeing how
they're a startup, so YMMV.<br>
<br>
That being said, I don't see a problem representing nested
relationships in RDF. And with how simple Graql is, even if Sparql
shouldn't fit your needs you might be able to adapt something
Graql-like? Sounds like an interesting project in any case!<br>
<br>
Cheers,<br>
MarLinn<br>
<br>
<blockquote
cite="mid:CAEc4Ma0SQUWp2HRs30xantM4A1WyHprUW6U0hkbjPDOsXv+U_w@mail.gmail.com"
type="cite">
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<div>I was excited about Graql because they say it makes nested
relationships easy to represent. I once wrote a toolkit in
Haskell for that[1], using the Functional Graph Library. Below
I've included a demo of it, in case anyone is interested. I
would like to integrate it with Sparql and other semweb tools.</div>
<div><br>
</div>
<div>[1] <a moz-do-not-send="true"
href="https://github.com/JeffreyBenjaminBrown/digraphs-with-text/">https://github.com/JeffreyBenjaminBrown/digraphs-with-text/</a><br>
</div>
<div><br>
</div>
<div>-- make an empty graph<br>
</div>
<div>
<div>> let g = empty :: RSLT</div>
<div><br>
</div>
<div>-- add three words to it</div>
<div>> g <- pure $ foldl (flip insWord) g ["the
cat","water","living organism"]</div>
<div><br>
</div>
<div>-- add three relationship templates.</div>
<div> -- Templates resemble edge labels, but with arbitrary
arity and nesting.</div>
<div>> g <- pure $ foldl (flip insTplt) g ["_ needs _",
"_ is a _","_ because _"]</div>
<div><br>
</div>
<div>-- view the graph so far</div>
<div>> view g $ nodes g</div>
<div>(0,"the cat") -- Expressions 0, 1 and 2 are "Words"</div>
<div>(1,"water")</div>
<div>(2,"living organism")</div>
<div>(3,"_ #needs _") -- Expressions 3, 4 and 5 are "Tplts"
(relationship templates)</div>
<div>(4,"_ #(is a) _")</div>
<div>(5,"_ #because _")</div>
<div><br>
</div>
<div>-- use the relationship templates to create two
relationships</div>
<div>> g <- pure $ fromRight $ insRel 3 [0,1] g</div>
<div>> g <- pure $ fromRight $ insRel 4 [0,2] g</div>
<div><br>
</div>
<div>> view g $ nodes g</div>
<div>(0,"the cat")</div>
<div>(1,"water")</div>
<div>(2,"living organism")</div>
<div>(3,"_ #needs _")</div>
<div>(4,"_ #(is a) _")</div>
<div>(5,"_ #because _")</div>
<div>(6,"the cat ##needs water") -- nodes 6 and 7 are the new
relationships</div>
<div>(7,"the cat ##(is a) living organism")</div>
<div><br>
</div>
<div>-- nesting! create a "because" relationship between
relationships 6 and 7</div>
<div>> g <- pure $ fromRight $ insRel 5 [6,7] g</div>
<div><br>
</div>
<div>> view g $ nodes g</div>
<div>(0,"the cat")</div>
<div>(1,"water")</div>
<div>(2,"living organism")</div>
<div>(3,"_ #needs _")</div>
<div>(4,"_ #(is a) _")</div>
<div>(5,"_ #because _")</div>
<div>(6,"the cat ##needs water")</div>
<div>(7,"the cat ##(is a) living organism")</div>
<div>(8,"the cat ##needs water ####because the cat ##(is a)
living organism")</div>
<div>> </div>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Mar 17, 2017 at 10:14 AM,
Vasiliy <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:vasiliy.l@gmail.com" target="_blank">vasiliy.l@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br>
<br>
Grakn.ai data model looks very much like RDF[1] with
SPARQL[2] as a query<br>
language. There are quite a few data stores, owl reasoners
and various<br>
libraries to work with rdf. There are haskell packages as
well: rdf4h[3] for<br>
data representation, hsparql[4] to create and submit queries
to sparql stores,<br>
swish[5] is a semantic web toolkit.<br>
<br>
Hope that would be helpful for you.<br>
<br>
<br>
[1] <a moz-do-not-send="true"
href="https://www.w3.org/TR/rdf11-concepts/"
rel="noreferrer" target="_blank">https://www.w3.org/TR/rdf11-co<wbr>ncepts/</a><br>
[2] <a moz-do-not-send="true"
href="https://www.w3.org/TR/sparql11-query/"
rel="noreferrer" target="_blank">https://www.w3.org/TR/sparql11<wbr>-query/</a><br>
[3] <a moz-do-not-send="true"
href="https://hackage.haskell.org/package/rdf4h"
rel="noreferrer" target="_blank">https://hackage.haskell.org/pa<wbr>ckage/rdf4h</a><br>
[4] <a moz-do-not-send="true"
href="https://hackage.haskell.org/package/hsparql"
rel="noreferrer" target="_blank">https://hackage.haskell.org/pa<wbr>ckage/hsparql</a><br>
[5] <a moz-do-not-send="true"
href="https://hackage.haskell.org/package/swish"
rel="noreferrer" target="_blank">https://hackage.haskell.org/pa<wbr>ckage/swish</a><br>
<br>
--<br>
Best Regards<span class="HOEnZb"><font color="#888888"><br>
Vasiliy</font></span><span class=""><br>
<br>
On 03/14/2017 06:53 AM, Jeffrey Brown wrote:<br>
</span>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">
Graql[1] is a (and stands for) graph query language. It
is unusually<br>
expressive, allowing relationships to be members of
other relationships[2]<br>
-- effectively, allowing one edge to be an endpoint of
another edge.<br>
<br>
Someone named Felix posted a Haskell library for
generating Graql<br>
queries[3].<br>
<br>
Does anyone have a Haskell program that not only
generates but uses such a<br>
query?<br>
<br>
<br>
[1] <a moz-do-not-send="true"
href="https://hackage.haskell.org/package/graql"
rel="noreferrer" target="_blank">https://hackage.haskell.org/pa<wbr>ckage/graql</a><br>
[2] <a moz-do-not-send="true"
href="https://discuss.grakn.ai/t/nested-relationships/"
rel="noreferrer" target="_blank">https://discuss.grakn.ai/t/nes<wbr>ted-relationships/</a><br>
[3] <a moz-do-not-send="true"
href="https://discuss.grakn.ai/t/graql-haskell-how-to-run-the-test-program/"
rel="noreferrer" target="_blank">https://discuss.grakn.ai/t/gra<wbr>ql-haskell-how-to-run-the-test<wbr>-program/</a><br>
<br>
<br>
<br>
<br>
</span><span class="">
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-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
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<div>Jeff Brown |
Jeffrey Benjamin Brown</div>
<div dir="ltr"><a
moz-do-not-send="true"
href="https://msu.edu/%7Ebrown202/" style="font-size:12.8px"
target="_blank">Website</a>
| <a
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target="_blank">LinkedIn</a><span
style="font-size:12.8px">(spammy, so I often miss messages here) </span><span
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moz-do-not-send="true" href="https://github.com/jeffreybenjaminbrown"
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